code: def get(self, db_name):
      databases = ca.database_controller.get_dict()
      if db_name not in databases:
          return http_error(
              400, "Error", f"There is no element with name '{db_name}'"
          )
      db = databases[db_name]
      if db["type"] == "project":
          project = ca.database_controller.get_project(db_name)
          tables = project.get_tables()
          tables = [
              {
                  "name": key,
                  "schema": None,
                  "class": "table",
                  "type": val["type"],
                  "engine": val.get("engine"),
                  "deletable": val.get("deletable"),
              }
              for key, val in tables.items()
          ]
      elif db["type"] == "data":
          handler = ca.integration_controller.get_handler(db_name)
          response = handler.get_tables()
          if response.type != "table":
              return []
          table_types = {"BASE TABLE": "table", "VIEW": "view"}
          tables = response.data_frame.to_dict(orient="records")
  
          schemas = defaultdict(list)
  
          for table_meta in tables:
              table_meta = {
                  key.lower(): val for key, val in table_meta.items()
              }
              schama = table_meta.get("table_schema")
              schemas[schama].append(
                  {
                      "name": table_meta["table_name"],
                      "class": "table",
                      "type": table_types.get(
                          table_meta.get("table_type")
                      ),
                      "engine": None,
                      "deletable": False,
                  }
              )
          if len(schemas) == 1 and list(schemas.keys())[0] is None:
              tables = schemas[None]
          else:
              tables = [
                  {
                      "name": key,
                      "class": "schema",
                      "deletable": False,
                      "children": val,
                  }
                  for key, val in schemas.items()
              ]
      elif db["type"] == "system":
          # TODO
          tables = []
      return tables
  
file_path: mindsdb/mindsdb/api/http/namespaces/tree.py
imports: from collections import defaultdict
  from flask import current_app
  from flask_restx import Resource
  from mindsdb.api.http.utils import http_error
  from mindsdb.api.http.namespaces.configs.tree import ns_conf
label_desc: Use image node_id 1 for calling the GetLeaf obj's underlying member method code with example usage: obj.get(db_name) and returns: tables, http_error, list